#13211: Upgrade GAP to 4.5.6
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Reporter: kini |
Owner: tbd
Type: enhancement |
Status: needs_review
Priority: major |
Milestone: sage-5.6
Component: packages |
Resolution:
Keywords: | Work
issues:
Report Upstream: Reported upstream. Developers acknowledge bug. |
Reviewers: Dmitrii Pasechnik
Authors: Volker Braun | Merged
in:
Dependencies: #13123, #13579 |
Stopgaps:
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Comment (by dimpase):
Replying to [comment:193 vbraun]:
> Replying to [comment:192 dimpase]:
> > OK. Still, what about limiting the suggested_size to something (say,
500MB) - I agree that 150MB I suggested above is on a low side.
>
> I'm against absolute limits, it should be a fraction of the available
resources. Otherwise you'll end up on record with "640kb is enough for
everyone".
I propose a limit that can be explicitly overwritten, not something
absolute. The reason is that on big machines a fraction of the resource
can be too big to be meaningful, and will make sharing the machine very
hard, as the first few processes will grab an enormous chunk of swap, and
the remaining ones will suffer.
I propose a limit that one would not even notice on a typical desktop (OK,
if you think 500MB is too small, make it 750MB, or 1GB).
And if you come to a super-duper machine to compute something huge then
OK, please tell the system explicitly how much memory you might need.
As a matter of fact, I do not understand why GAP needs to **reserve** any
swap at all. Just does not make sense to me. What is so special about GAP
here?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13211#comment:195>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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